Electromagnetic valve.



PATENTED OCT. 24, 1905.

I. G. WATERMAN.

ELECTROMAGNETIC VALVE.

7 APPLICATION FILED AUG. 29, 1903.

gvwembo'c 1313 115 UNITED STATES PATENT @FFTQE.

ELECTROMAGNETIC VALVE.

Specification of Letters Patent.

Patented Oct. 24, 1905.

Application filed. August 29, 1903. Serial N0- 171,215.

This invention relates to electromagnetic valves.

The object of the present invention is to provide improvements on theelectromagnetic valve set forth in my application filed July 9, 1903,Serial No. 164,888, and with this end in view I aim to simplify theconstruction, render it compact, insure reliability of action in openingand closing of the valve, provide for the protection of the magnet coilor solenoid against any leakage which might take place around the valve,and generally to provide a simple, durable, and efiicientelectromagnetic valve employing but one solenoid which is adapted onalternate electrical energizations to open and close the valve.

Having the foregoing objects in view the invention consists of thosefeatures of construction and novel combinations of parts set forth indetail hereinafter and embodied in the appended claims.

1n the accompanying drawings, Figure 1 is a vertical section on line aC6 of Fig. 2; Fig. 2, a vertical section on line b b of Fig. 1; Fig. 3,a side elevation; Fig. 4, a horizontal section on line 0 0 of Fig. 1;Fig. 5, a side view of the armature; and Fig. 6, a modifica tion whereinthe pawl pulls uponthe ratchetwheel of the valve instead of pushing it,as in the other figures.

The numeral 1 designates a tube or pipesection adapted to be coupled atits opposite screw-threaded ends 2 and 3 to the supply and dischargewater-pipes. In other words, the pipe-section l is interposed in anordinary water-pipe and water enters at 2 and flows out at 3. One sideof this pipe-section 1 is flattened at 4, and extending diametricallythrough the pipe-section is a rotary plugvalve 5, having secured to itslarger end a ratchet-wheel 6, with the teeth thereof disposed in pairs,while a screw and washer 7 are secured to the smaller end of the valve.The pipe-section l is provided with an annular groove 8, from whichinclined ducts or ports 9 lead to the interior of the pipe-section 1,provision being thereby made so that if any water leaks out at eitherend of the valve it will, pass down the pipe-section 1 and be caught inthe groove 8 and pass through the ports 9 into the pipe-section again,thereby preventing any accumulation of water which would tend to enterthe coil or solenoid.

Slidable on the tube or pipe-section 1 is a tubular iron armature 10,having cut-out portions 11 and 12 in its opposite sides, the cutoutportion 11 receiving the screw and washer 7 and preventing any turningof the armature on the tube or pipe section 1, and the cutout portion 12being adapted to receive the ratchet-wheel6 and adog 13, pivoted at 14to the flat portion 4 of the tube or pipe section 1, and a leaf-spring15, which is secured to the tube 1 and holds the dog in engagement withthe teeth of the ratchet-wheel, said dog preventingbackward movement ofthe ratchetwheel and valve. The armature is provided with thelongitudinal cut-away portion 16, in which lies a pawl 17, secured byleaf-spring 18 to the armature at 19. This pawl has a pair of teeth 20,adapted to engage the pairs of teeth on the ratchet-wheel, and is alsoprovided with a locking-tooth 21 to engage a succeeding pair of teeth onthe ratchet-wheel after the valve has been turned and when the armatureis at the limit of its movement, to

thereby prevent any further accidental turning of the valve. Thearrangement of the ratchet-wheel, the pawl, and the dog prevents anyturning of the armature on the tube or pipe 1.

Surrounding the armature and the pipe-section or tube 1 is a tube orshell 22, which is provided with a shoulder 23 and is secured solenoid32, which is held against longitudinal movement by shoulders 23 and 33.

The numeral 34 designates a coil-spring interposed between the nut 29and the upper end of the armature and located in the tube or shell 22,the tendency of which is to normally keep the armature down.

1n the modification shown in Fig. 6 the con struction is the same asthat heretofore described with the exception that the pawl is; securedto the opposite end of the armature;

A nut 30 is screwed on the end 2, and

and exerts a pulling efiiect on the ratchetwheel when the solenoid isenergized instead of the pushing effect of the construction shown in theother figures.

The parts are normally in the position shown. When an electrical currentis sent through the coil or solenoid, the armature is drawn thereinto,and the teeth on the pawl are made to engage with a pair of teeth of theratchet-wheel, and the parts are so apportioned that the plug-valve isturned a quarterrevolution to either open or close the valve, as thecase may be. When the coil is deemergized, the spring returns thearmature to normal position and the pawl rides idly over theratchet-wheel, the dog 13 meanwhile looking the ratchet-wheel againstbackward movement, so that the position of the valve is not disturbed.On again energizing the coil the operation is repeated and the valveturned another quarter-revolution to open or close it, as the case maybe. When the armature is attracted by the coil and after theratchetwheel has been turned by the teeth on the pawl, the locking-tooth21 comes between the members of the pair of teeth on the ratchetwheelsucceeding the pair engaged by the pawl, and thereby prevents too farturning of the ratchet-Wheel and valve.

The valve is intended to be operated by the utilization of a momentaryor temporary current of electricity,-and any of the temporarycontact-switches set forth in my Patents Nos. 775,016, 775,052, 775,053,and 775,055, dated November 15, 190a, can be used for operating thevalve.

If desired, the tube 'or shell 22 might be filled with oil to preventleakage of Water from the valve into the solenoid. If this is done, thegroove 8 and ducts 9 would be dispensed with.

' Having thus described my invention,what I claim as new, and desire tosecure by Letters latent, is

1. The combination with a tube or pipe section, of a rotary plug-valvecontrolling the passage of the iiuid therethrough, an armature shdablelongitudinally of the tube or pipe section, a spring for retracting thearmature, means for turning the plug-valve from the armature on themovement thereof, and a solenoid surrounding the armature, the valve andthe tube or pipe section.-

2. The combination with a tube or pipe section, of a rotary plug-valvecontrolling the passage of the fluid therethrough, an armature slidablelongitudinally of the tube or pipe section and having a cut-out portion,means on the valve whereby it can be turned step by step, a device onthe pipe-section to prevent backward rotation of the valve, said deviceand turning means on the valve being located in the opening of thearmature, means on the armature adapted to engage the turning means onthe valve when the armature is moved in one direction and to dis engagefrom said valve-turning means when the armature is moved in the oppositedirection, a spring for moving the armature in one direction, and asolenoid surrounding the tube or pipe section and the armature andvalve, adapted for attracting the armature.

3. The combination with a tube or pipe section, of a rotary plug valvecontrolling the fiuidpassage therethrough, a ratchetwheel secured onsaid plug-valve, a dog pivoted to the tube or pipe section adapted toengage the ratchet-wheel and prevent backward turning of the plug-valve,a tubular armature slidable longitudinally of the tube or pipe sectionand having an opening which receives the ratchet-wheel and dog, aspringpressed pawl carried by the armature adapted to engage the teethof the ratchet-wheel when the armature is moved in one direction. and toride idly on the ratchet-wheel when the armature is moved in theopposite direction, a spring for moving the armature in one direction,and a solenoid inclosing the tube or pipe section, the valve and thearmature, which is adapted for attracting the armature.

4. The combination with a rotary valve, of a ratchet-wheel thereon forturning the valve, an armature, an electromagnet for operating thearmature, a tooth carried by the armature to engage the ratchet-wheeland turn it and the valve, and a locking-tooth carried by the armatureadapted to engage the teeth of the ratchet-wheel after the valve hasbeen turned to a predetermined position to thereby prevent furtheraccidental turning of the valve.

5. The combination With a rotary valve and a ratchet-wheel thereon forturning the valve, of an armature, an electromagnet for operating thearmature, a pawl carried by the armature having a tooth to engage theratchet-wheel and turn it and the valve and also provided with anothertooth spaced apart from the tooth aforesaid which is thereafter adaptedto engage the ratchetwheel and prevent further accidental turningthereof.

6. The combination with a tube or pipe section, of a valve controllingthe passage of the fluid therethrough, an armature for operating thevalve, an electromagnet on the tube or pipe section for controlling thearmature, and means to take 011' leakage of Water from the valve,comprising ports extending through the tube or pipe section-from theexterior to the interior thereof.

7. The combination with a tube or pipe section, of a valve controllingthe passage of the fluid therethrough, an armature for operating thevalve, an electromagnet on the tube or pipe section for controlling thearmature, means to take off leakage of water from the valve ,comprisingports extending through the tube or pipe section from the exterior tothe interior thereof, and a groove in the exterior of the tube or pipesection which communicates with said ports.

8. The combination with a tube or pipe section and a valve controllingthe passage of fluid therethrough, of an armature slidable on the tubeor pipe section and adapted for operating the valve, a tube or shellinclosing the armature, packing interposed between the tube or shell andthe tube or pipe section on opposite sides of the valve, and a coil orsolenoid on the said tube or shell which is adapted for operating thearmature.

9. The combination with a tube or pipe section, of a valve controllingthe passage of the fluid therethrough, an armature slidablelongitudinally of the tube or pipe section, means for operating thevalve on the movement of the armature, and a solenoid surrounding thearmature, the valve, and the tube or pipe section.

10. The combination with a tube or pipe section, of a valve controllingthe fluid-passage therethrough, a ratchet-wheel for operating saidvalve, a dog adapted to engage the ratchet-wheel and prevent backwardturning thereof, an armature slidable longitudinally of the tube or pipesection, a springpressed pawl carried by the armature adapted to engagethe teeth of the ratchet-wheel when the armature is moved in onedirection and to ride idly on the ratchet-wheel ratchet-wheel for turninsaid wheel to operate the valve, and a locking-tooth carried by theoperating member adapted to engage the teeth of the ratchet-wheel afterthe valve has been predeterminedly positioned to thereby prevent furtheraccidental operation of the valve.

12. The combination with a valve, of a ratchet-wheelfor operating thevalve, an operating member, a pawl carried by the operating memberhaving a tooth to engage the ratchet-wheel and turn said wheel tooperate the valve and also provided with another tooth spaced apart fromthe tooth aforesaid which is thereafter adapted to engage theratchet-wheel and prevent further accidental turning thereof.

13. In an electromagnetic valve, the combination with a valvecasing, ofa valve-seat therein, a valve for said seat, an armature slidable inrelation to the valvecasing and ada ted for operating the valve, aremovable sheli slidable endwise on and ofi the valvecasing and whichencircles the armature, a solenoid carried by said shell and surroundingit, and means for holding the solenoid and shell on the valve-casing.

14. In an electromagnetic valve, the combination with a valve-casing, ofa valve-seat therein, a valve for said seat, an armature slidable inrelation to the valve-casing and adapted for operating the valve, aremovable shell slidable endwise on and off the valvecasing and whichencircles the armature, a solenoid carried by said shell and surroundingit, and removable nuts for engaging opposite ends of the valve-casingand opposite ends of the solenoid and holding the solenoid and shell onsaid valve-casing.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ISAAC G. IVATERMAN.

Witnesses ELMER SEAVEY, WALLACE R. SEAVEY.

